Scilab Function

steadycos - Finds an equilibrium state of a general dynamical system described by a scicos diagram

### Calling Sequence

  `[X,U,Y,XP]=steadycos(scs_m,X,U,Y,Indx,Indu,Indy [,Indxp [,param ] ])`

### Parameters

- `scs_m` : a Scicos data structure
- `X` : column vector. Continuous state. Can be set to [] if zero.
- `U` : column vector. Input. Can be set to [] if zero.
- `Y` : column vector. Output. Can be set to [] if zero.
- `Indx` : index of entries of X that are not fixed. If all can vary, set to 1:$
- `Indu` : index of entries of U that are not fixed. If all can vary, set to 1:$
- `Indy` : index of entries of Y that are not fixed. If all can vary, set to 1:$
- `Indxp` : index of entries of XP (derivative of x) that need not be zero. If all can vary, set to 1:$. Default [].
- `param` : list with two elements (default list(1.d-6,0)). param(1): scalar. Perturbation level for linearization; the following variation is used del([x;u])_i = param(1)+param(1)*1d-4*abs([x;u])_i. param(2): scalar. Time t.
- `X` : steady state X
- `U` : stationary input U
- `Y` : output corresponding to steady state found
- `XP` : derivative of the state corresponding to steady state found

### Description

  This function finds the steady state for a given system described by a Scicos diagram. The diagram consists in general of a Super block with input and output port blocks. The steady states concerns only the continuous-time dynamics.

### See Also

`lincos` , `scicos_simulate` , `scicos` ,

### Authors

  Ramine Nikoukhah

### Used Function

optim